97154831 has 2 divisors, whose sum is σ = 97154832. Its totient is φ = 97154830.

The previous prime is 97154819. The next prime is 97154833. The reversal of 97154831 is 13845179.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97154831 is a prime.

It is a super-2 number, since 2×97154831² = 18878122373277122, which contains 22 as substring.

Together with 97154833, it forms a pair of twin primes.

It is a Chen prime.

It is a pancake number, because a pancake can be divided into 97154831 parts by 13939 straight cuts.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97154833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48577415 + 48577416.

It is an arithmetic number, because the mean of its divisors is an integer number (48577416).

Almost surely, 2^97154831 is an apocalyptic number.

97154831 is a deficient number, since it is larger than the sum of its proper divisors (1).

97154831 is an equidigital number, since it uses as much as digits as its factorization.

97154831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 38.

The square root of 97154831 is about 9856.7150207359. The cubic root of 97154831 is about 459.7144273502.

The spelling of 97154831 in words is "ninety-seven million, one hundred fifty-four thousand, eight hundred thirty-one".